Question

Write a situation in which positive and negative numbers are used to describe values that have opposite meaning. What does 0 represent in this situation you created?

Answer 1

Here's an example of a situation with 1 and O.

The rate of acceleration would be 1.

The item will gain speed if the acceleration is 10 m/s.

However, if the acceleration is -10m/s, the object will lose speed.

In the instance of a 1, the item gained speed, whereas in the case of a 0, the object lost speed.

Answer 2

Explained below.

Step-by-step explanation:

There are quite a few examples of this but I will go with what is common in physics which is "acceleration due to gravity".

Acceleration due to gravity is positive when an object is falling down in the direction of gravity but negative when it is thrown upwards and acting against gravity motion.

Thus;

g_downwards = 9.8 m/s²

g_upwards = -9.8 m/s²

If acceleration due to gravity is zero, it means that the object is at the centre of the earth because at that point g = 0.